A BIM TOOL FOR THE QUANTIFICATION OF WASTE AND IMPACTS IN HISTORICAL BUILDINGS RENOVATION PROJECTS

Building Information Modelling (BIM) is a powerful methodology that is widely used in the design, construction and maintenance of buildings. However, it can also offer significant benefits for renovation planning and waste management, such as enhanced collaboration, accurate waste quantification and improved safety. LiDAR scanning technology can be used to capture the visible surfaces. Digital models based on BIM methodology can include the elements and materials to support quantification and traceability. Nevertheless, both are expensive and time consuming in most renovation projects due to their complex modelling and data integration. A new software tool called BIM4DW has been developed in the framework of the European project ICEBERG (HORIZON2020, GA869336). This web-based tool can reduce the time required for modelling and inventory. It also eliminates the need of previous complex BIM models. By combining a2D/3D modelling interface with parametric databases of common building elements, BIM4DW allow sarchitects and restorers to identify and quantify materials quickly and accurately. The tool also supports the definition of refurbishment and partial demolition techniques and quantification of waste streams, as well as calculating the total time, environmental impacts and cost of each intervention. This paper presents the results of validating BIM4DW in one renovation project of an historical building in Madrid (Spain). The study found that BIM4DW accurately identified and quantified waste, improved control of the renovation tasks. However, there were also areas where the tool could be improved, such as the sketching module and the traditional (non-linear) building elements.